Direct-acting steam-engine



(No Model.) 4 Sheets-Sheet 1.

J. W. COLE, Direot Acting Steam Engine. No. 233,208. Patented Oct.12,1880.

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N. PETERS. PHOTO-l """GRAPHER. WASHINGTONt D C (No Model.) 4Sheets-Sheet 2.

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(No Model.) 4 SIieets-Sheet 3. J. W. OOLE.

Direct Acting Steam Engine. No. 233,208. Patented Oct. 12,1880.

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MPEIERS, FHOTO-UTHOGRAPNER. WASHINGTON. D C.

(No Model.) 4 Sheets-Sheet 4. J. W. COLE.

Direct Acting Steam Engine. No. 233,208. Patented Oct. 12,1880.

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N-FETERQ PHDTO-LITHOGRAFNER. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

J. WENDELL COLE, O F COLUMBUS, OHIO.

DIRECT-ACTING STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 233,208, dated October12, 1880.

Application filed August 30, 1880. (No model.)

To all whom it may concern:

Be it known that I, J. WENDELL COLE, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented new and useful Improvements in Direct-Acting Steam-Engines, ofwhich the following is a specification.

My invention relates to what are usually called direct-actingsteam-engines; and its object is to increase the efficiency of suchengines in such manner that a much smaller cylinder will give a muchgreater power per square inchof piston-surface than can possibly beobtained by the ordinary direct-acting engine; and my invention,therefore, consists, first, in admitting the steam at boiler-pressuredirect to a piston, filling the cylinder its entire length, and having aspiral exposed surface, by which a much greater piston-surface isobtained, and the steam must exert is full pressure to the end of thecylinder, or until it is exhausted at the opposite end from where itenters.

It also consists in regulating the steam by a suitable governor of anyapproved description, arranged in the exhaust or outlet pipe, instead ofin the inlet-pipe, as is now the case. By this arrangement the steam ispermitted to exert its full boiler-pressure the entire length of thespiral blade or helix, instead of being throttled or wire-drawn, asordinarily done.

Another important feature of my invention is that the connecting-rod,cross-head, guides, crank, and all usual appendages used in the ordinarydirect-acting engine are entirely dispensed with, and the engine is farmore compact and comprises less pieces, and of course has less frictionand less parts to get out of order than any direct-acting engine inexistence that I am aware of.

In the drawings, Figure I is a side elevation of my engine, showing thegovernor arranged in the exhaust-pipe. Fig. 11 is a plan view of thesame. Fig. 111 is a longitudinal vertical section of the same. Fig. IVis an end elevation of the same. Fig. V is a vertical crosssection online a wof Fig. I. Fig. VI illustrates a modified form ofthrust-bearing.

In the drawings, A is the cylinder, connected and secured to thebed-plate B, or it may be cast in one piece with it and thepillow-blocks of the shaft or piston-rod. In this cylinder is closelyfitted a piston, 0, made in the form of a screw or helix, which may havea broad or extended bearing-surface in contact with the cylinder, asshown in Fig. V, and in this surface suitable packing 0, set out bysprings c, or by steam acting upon it through a passage, 0, may beinserted, so as to prevent any leakage of steam.

To the piston is connected the piston-rod D, which forms at the sametime the shaft, and is supported in suitable bearings E E. It passesthrough an ordinary stuffing-box, F, at the front end of the cylinder,while its rear end is supported in a hollow hub or hearing, G, formed inthe rear cylinder-head, in-which hub or bearing may be placed one ormore tempered-steel disks, g, by which the end-thrust is taken up.Instead of these disks a friction-roller thrust-bearing, as shown inFig. VI, may be employed with conoidal rollers 9.

At one end of the cylinder is arranged the inlet-port a, and at theother the outlet-port b, from which leads the exhaust-pipe b.

The letter H designates a governor of ordinary construction, providedwith pulley h, which'receives motion from pulley i on shaft I, journaledin bearings k k, and to the shaft motion is imparted by pulley l, drivendirect from the shaft or piston rod D. The governor, through the stem 0,controls a throttle or regulating valve, which is located at O in theexhaust-pipe 1), instead of being arranged in the inlet steam-pipe, asheretofore. By this arrangement, as before stated,' the steam ispermitted to exert its full pressure upon the piston, instead of beingthrottled or wire-drawn, as is the case when the regulating-valve islocated in the inlet-pipe.

Secured to the piston-rod or shaft D, between the bearings E and E, is abelt-pulley, M, by which and a suitable belt motion may be transmitteddirect to any kind of machinery adapted to receive it. A fly-wheel, N,may be mounted upon the shaft D at its end or other suitable point.

From the inlet-port a of the cylinder A a steam-pipe, on, leads, and maybe connected to a steam-boiler, and in this steam-pipe may be arrangedthe usual cut-0E.

When steam is admitted to the cylinder through the steam-pipe a andinlet-port a it strikes the blade or blades of the piston and causessaid piston and its shaft or rod to rotate, and as the steam traversesthe entire surface of the blades, it escapes through the exhaust-port b.Now, if the regulating-valve be changed in position-that is, opened orclosed more or less-the flow of steam from the boiler will be increasedor decreased accordingly; but this is after it has acted upon thepiston.

Having now fully described my invention, I claim- 1. In a directaetingsteam-engine, the combination, with a cylinder provided with suitableinlet and exhaust ports, of a piston consisting of a continuous spiralor screw-like blade fitting snugly within said cylinder, and

nesses.

J. WENDELL COLE.

Witnesses JAMES L. NORRIS, ALBERT H. NORRIS.

